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SPIRE Design Description - Research Services

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Draft <strong>SPIRE</strong> <strong>Design</strong> <strong>Description</strong> Document<br />

Name Location Temp.<br />

(K)<br />

CFIL1<br />

SFIL2<br />

input filter on<br />

4K box<br />

Table 4-5 Spectrometer filtering scheme.<br />

4K 90cm-1<br />

low-pass<br />

edge<br />

Filter Edges<br />

(cm-1)<br />

at pupil in SOB 4K 75cm-1lowpass<br />

edge<br />

90% 85.5<br />

50% 90<br />

10% 94 5<br />

90% 71.3<br />

50% 75<br />

10% 78 8<br />

86<br />

Function<br />

(B=blocking<br />

T=optimum<br />

transmission)<br />

T 17-48cm-1<br />

B 90cm-1+<br />

T 15-50cm-1<br />

B 75cm-1+<br />

after SM8A 4K 15-50cm-1<br />

T/R 15-50cm-<br />

SBS1<br />

beam<br />

1<br />

after SM10A 4K<br />

splitter<br />

15-50cm-1<br />

(>90% 4RT)<br />

T/R 15-50cm-<br />

SBS2<br />

beam<br />

splitter<br />

(>90%<br />

1<br />

(>90% 4RT)<br />

2K cold stop 4K<br />

4RT)<br />

60cm-1 90% 57 T 33-50cm-1<br />

SFIL3S (SW)<br />

low-pass 50% 60 B 60cm-1+<br />

LPE definer<br />

edge<br />

300mK 50cm-1*<br />

10% 63<br />

90% 47.5 T 33-50cm-1<br />

SFIL4S_1 over SW array<br />

low-pass 50% 50 B 50cm-1+<br />

HPE definer<br />

edge<br />

300mK 33cm-1*<br />

10% 52 5<br />

90% 34.65 T 33-50cm-1<br />

SFIL4S_2 over SW array<br />

HPE 50% 33 B 0-33cm-1<br />

10% 31 35<br />

blocker over 300mK 55cm-1 90% 52.2 T 33-50cm-1<br />

SFIL5S SW array<br />

low-pass 50% 55 B 55cm-1+<br />

2K cold stop 4K<br />

edge<br />

55cm-1<br />

10% 57 8<br />

90% 52.2 T 15-33cm-1<br />

SFIL3L (LW)<br />

low-pass 50% 55 B 55cm-1+<br />

LPE definer<br />

edge<br />

300mK 33cm-1*<br />

10% 57 8<br />

90% 31.35 T 15-33cm-1<br />

SFIL4L_1 over LW array<br />

low-pass 50% 33 B 33cm-1+<br />

HPE definer<br />

edge<br />

300mK 15cm-1*<br />

10% 34 65<br />

90% 15.75 T 15-33cm-1<br />

SFIL4L_1 over LW array<br />

HPE 50% 15.0 B 0-15cm-1+<br />

10% 14 25<br />

blocker over 300mK 40cm-1 90% 38 T 15-33cm-1<br />

SFIL5L LW array<br />

low-pass 50% 40 B 40cm-1+<br />

edge 10% 42<br />

Comment<br />

Thermal blocker.<br />

Common.<br />

Thermal blocker.<br />

Common.

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